在冲压加工中,改善劳动条件,实现自动化生产固然重要,但对模具的精度、寿命及性能的提高要求日益强烈。现今电火花线切割加工已广泛用于冲压模具的制造中,作为一种高效的加工手段具有许多优秀特征。然而在电及物理现象的作用下,加工表面的材质很易发生变化,因此在加工终了与用研磨制做的模具相比,初期磨损非常大,特别是易产生裂纹和卷刃等现象,在精度和寿命方面存在着许多问题。 In the stamping process, to improve working conditions, to achieve automated production is important, but the accuracy of the mold, life expectancy and performance requirements are increasingly strong. Today’s wire-cut wire EDM has been widely used in the manufacture of stamping dies and has many excellent features as an efficient machining tool. However, under the action of electricity and physical phenomena, the material of the machined surface is easy to change. Therefore, compared with the mold made by grinding at the end of processing, initial wear is very large, especially the phenomenon of cracks and curling easily occurs. There are many problems with accuracy and longevity.